drm/amdgpu: Update AMDGPU_INFO_UQ_FW_AREAS query for sdma

Add a query for sdma queues.  Userspace can use this to
query the size of the CSA buffers for sdma user queues.

Proposed userspace:
https://gitlab.freedesktop.org/yogeshmohan/mesa/-/commits/userq_query

Reviewed-by: Prike Liang <Prike.Liang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index b02da84ab99d1c52ef6398579a9208196a13812b..36fdd1af9d6b3bcd5592793bec24449e92c2664d 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -409,6 +409,24 @@ static int amdgpu_userq_metadata_info_compute(struct amdgpu_device *adev,
        return ret;
 }
 
+static int amdgpu_userq_metadata_info_sdma(struct amdgpu_device *adev,
+                                          struct drm_amdgpu_info *info,
+                                          struct drm_amdgpu_info_uq_metadata_sdma *meta)
+{
+       int ret = -EOPNOTSUPP;
+
+       if (adev->sdma.get_csa_info) {
+               struct amdgpu_sdma_csa_info csa = {};
+
+               adev->sdma.get_csa_info(adev, &csa);
+               meta->csa_size = csa.size;
+               meta->csa_alignment = csa.alignment;
+               ret = 0;
+       }
+
+       return ret;
+}
+
 static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
                             struct drm_amdgpu_info *info,
                             struct drm_amdgpu_info_hw_ip *result)
@@ -1386,6 +1404,14 @@ out:
                        if (ret)
                                return ret;
 
+                       ret = copy_to_user(out, &meta_info,
+                                               min((size_t)size, sizeof(meta_info))) ? -EFAULT : 0;
+                       return 0;
+               case AMDGPU_HW_IP_DMA:
+                       ret = amdgpu_userq_metadata_info_sdma(adev, info, &meta_info.sdma);
+                       if (ret)
+                               return ret;
+
                        ret = copy_to_user(out, &meta_info,
                                                min((size_t)size, sizeof(meta_info))) ? -EFAULT : 0;
                        return 0;

diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 138d9ae1aa489027adf1317cc3506562347675c0..f902add31fc64f11b024204013f2b3b1e313304a 100644 (file)
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -1637,10 +1637,18 @@ struct drm_amdgpu_info_uq_metadata_compute {
        __u32 eop_alignment;
 };
 
+struct drm_amdgpu_info_uq_metadata_sdma {
+       /* context save area size for sdma6 */
+       __u32 csa_size;
+       /* context save area base virtual alignment for sdma6 */
+       __u32 csa_alignment;
+};
+
 struct drm_amdgpu_info_uq_metadata {
        union {
                struct drm_amdgpu_info_uq_metadata_gfx gfx;
                struct drm_amdgpu_info_uq_metadata_compute compute;
+               struct drm_amdgpu_info_uq_metadata_sdma sdma;
        };
 };